[_rkcg]

Following this logic, does this mean if I have a project name like ABC, and some company decided to incorporate in this name plus registering the trademark, I have to give up the name when they decide to come after me? Like I have a github.com/ABC, a npmjs.com/org/ABC. All just gone, because trademarks right gives them the right, and I have nothing that protects me?

If that is the case, ok. It's just that I was naive enough to believe I could protect my little open-source project from this using a trademark. The EUPIO somewhat confirmed in their writing that you don't need commercial activities, but you need "genuine use", which is, again, hard to prove if you don't collect user data.

[kube-system]

"ABC" is already a trademark. There's probably dozens if not hundreds of trademarks for "ABC".

Trademarks are only the right to use a name commercially for a particular good or service.

Anything outside of that is fair game.